Apparatus for the production of white lead



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2 Shets-Sheet' 1. N.K. MORRIS & J. W. BAILEY. v APPARATUS FOR THEPRODUGTION 0F WHITE LEAD N0. 513,130. Patented Jan. 23, 1894.

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Patented Jan. 23, 1894.

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NORMAN K. MORRIS AND JOHN W. BAILEY, OF DENVER, COLORADO.

APPARATUS FOR THE PRODUCTION OF WHITE LEAD.

SPECIFICATION forming part of Letters Patent No 513,130, dated January23, I894.

Application filed December 30, 1891. Renewed December 13, 1893. SerialNo. 493.581- (No model.) 7

To all whom it may concern.-

Be it known that we, NORMAN K. MORRIS and JOHN W. BAILEY, of Denver,county of Arapahoe, State of Oolorado, have invented an Improvement inApparatus for the Production of White Lead, of which the followin gdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

This invention relates to apparatus for the production of white lead orlead carbonate.

The principal objects of the invention are, first, to provide thecorroding chamber with a series of independently removable drawers orracks, on which the lead fiber is placed, and which may be removed fromthe exterior without access to the chamber; second, to provide a seriesof acid receiving reservoirs, distributed throughout the corrodingchamber to uniformly supply the entire quantity of fiber contained inthe chamber; third, to take the gases from the combustion chamber of asteam generator to supply the corroding chambers of the apparatus; andfourth, to provide suitable reservoirs to contain water through whichthe gas is passed to thereby wash the same and also render it hydrous.

Other features of the invention will be hereinafter described andpointed outein the claims.

Figure 1 of the drawings represents in elevation and partial section, anapparatus embodying this invention; Fig. 2 a vertical section on thedotted line x-Q; Fig. 3, a plan view of one of the racks or drawers onwhich the-lead fiber is placed.

Referring to the drawings, A, A, A, represent corroding chambers having,as represented, brick walls A fitted with suitable division strips or,to form guideways to receive the drawers b, fitted with suitable pulls band having their front pieces I) made to project laterally as at 5, onall sides of the drawer, said projecting edges 5 lapping over andcompletely closing the entrance opening when the drawer is in place. Theprojecting edge 5 may be provided with a rubber or other suitablepacking strip 6, to more tightly close the opening when the drawer is inplace to thus exclude air from the chamber, or if desired, the packingmay be arrangedon the walls of also provided with numerous smallreservoirs c, to contain acetic acid or acidulated water,

which when vaporized assists in the corrosion of the lead-fiber, thedrawers thus constitut ing reservoir. supports to distribute thereservoirs throughout the corroding chambers to more evenlysupply thelead fiber with the acid vapor, so as to produce a more uniformcorrosion. The reservoirs 0 may be connected by grooves or troughs 0*,if desired, to permit the acid to circulate freely between the several.reservoirs. The conduit d enters the combustion chamber of any suitablefurnace, preferably employed in connection with a steam generator 8,which supplies steam for the apparatus, the said conduit havingconnec'ted with it a fan or blower D, which takes the products ofcombustion, which consist mainly of carbonic acid gas, from thecombustion chamber, and forces the same under pressure into the conduit61, provided with branches (1 which enter the several corroding chambersof the apparatus, the said branches being fitted with suitableregulating valves d The branches at terminate in bell-shaped months oroutlets d which are directed downwardly into the reservoirs e, one ofwhich is provided for and preferably placed in the bottom of eachchamber A, the said reservoirs 6 being filled with wash water above themouths of the branches d so that the gasissuingfrom the said mouths willpass through the wash water in the reservoir and thus become washed orpurified, the said reservoirs also serving as reservoirs of moisture forthe corroding chambers to independently supply moisture to the chambersto assist the gases in their corroding action. By forcing the gasestaken from the combustion cham- ,ber of a furnace into theapparatus'under pressure, the supply for each corroding chamber may becontrolled independently of the 7 other chambers of the apparatus. Asteam pipe F, leading from the generator S, has branches f, controlledby valves f entering the reservoirs e, see Fig. 1, to properly heat thewash water in the reservoirs to assist in the corrosion.

The operation of the apparatus is as follows, viz:-The lead to becorroded, preferably in the form of fiber, is placed in suitablequantities in the several drawers b, which are then immersed in aceticacid or acidulated water for the double purpose of wetting and acidulating the lead fiber, and of filling the reservoirs cwith acid. Afterdraining sufficiently, the drawers are placed in the corroding chamberand the gas and steam turned on. The gas enters the chamber through thewash water contained in the reservoirs e, which takes from it all dust,smoke or other foreign or impure particles, and at the same timemoistens the gas to render it hydrous, so that it will not dry out thelead fiber as it passes through it. The gas passes from the free surfaceof the wash water up through the chambers, and through the severaldrawers therein, and with the acetic acid vapors, rising from thenumerous reservoirs distributed throughout the chambers, acts upon andcorrodes the lead fiber contained in the drawers, the gas passing 01fthrough the perforated tops A of the chambers. The various drawers withtheir contents being accessible from the exterior of the corrodingchamber, may be removed individually from the corroding chamber forexamination, permitting the corroding process to continue uninterruptedin the other drawers, and as fast as the fiber in a drawer is completelyand properly corroded, it may be replaced by another drawer containingfresh fiber, the apparatus thus being convenient to operate and capableof producing a very uniform product.

This invention is not limited to the particular construction hereinshown and described, as the same may be varied without departing fromthe spirit and scope of the invention. For instance, the acid receivingreservoirs 0 may be distributed through the chambers and supported orformed independently of the drawers.

The drawers 1) may be varied in shape or construction to meet variousrequirements.

By connecting a series of corroding chambers in the manner illustrated,each chamber may be run independently of the others and still take thegas and steam from the same source, forming in effect, so manyindependent apparatuses.

We claim 1. In an apparatus for the production of white lead, acorroding chamber containing a series of drawers having perforatedbottoms to receive the lead, and accessible from the exterior of thechamber, and a series ofvacid receiving recesses in said drawer bottomssubstantially as described.

2. In an apparatus for the production of white lead, a corroding chambercontalnlng a series of drawers to receive the lead, the bottoms of saiddrawers being perforated and provided with recesses to form reservoirs,and channels connecting said recesses substantially as described.

3. In an apparatus for the production of white lead, a corroding chamberto contain the lead to be converted, combined with a reservoirin saidchamber, a gas conduit discharging in said reservoir and a steam supplyentering said reservoir, substantially as described.

4. The combination with a series of corroding chambers, of an open topwash reservoir in the lower part of each chamber, and a gas conduithaving branches leading to the reservoirs in the several chambers of theser1es, whereby said reservoirs serve to purlfy and moisten the gas andalso to independently supply moisture to assist in the conversion of thelead, substantially as described.

5. In an apparatus for the production of white lead a corroding chamberhaving near its bottom a gas inlet, a vertical series of1ndependently-removable drawers in the said chamber having perforatedbottoms through which the gas may rise, and a top plate for the -chamberprovided with perforations by which a direct upward draft and passage ofthe corroding gas is secured from the gas 1nlet through the successivevertically-arranged drawers containing the lead, substantially asdescribed.

6. The combination with'a corroding chamber having at or near its bottoma reservoir I00 by which a constant supply of moisture may be suppliedto the chamber, and a steam generator having a combustion chamber, of aconduit leading from the said combustion chamber and entering saidcorroding chamber 105 through said water reservoir, whereby the gasesfrom the combustion chamber are purified by the water used to furnishmoisture for the chamber, a blower to create a pressure 111 the saidconduit, and a steam pipe leading no from the said steam generator to,and to warm the liquid in said reservoir, substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of II 5 two subscribing witnesses.

NORMAN K. MORRIS. JOHN W. BAILEY.

Witnesses:

PLINY W. ALLEN, JOHN M. KINKADE.

